EDP Sciences
Free Access
Issue
A&A
Volume 544, August 2012
Article Number A37
Number of page(s) 28
Section Extragalactic astronomy
DOI https://doi.org/10.1051/0004-6361/201218888
Published online 26 July 2012

Online material

Table 2

Positions and magnitudes of the CDQs and the comparison stars.

thumbnail Fig. 1

The intranight optical DLCs of the LPCDQs monitored in the present study. For each night, the source name, the telescope used, the date, and the duration of monitoring are given at the top. The upper 3 panels show the DLCs of the LPCDQ relative to 3 comparison stars while the attached lower 3 panels show the star-star DLCs, where the solid horizontal lines mark the mean for each star-star DLC. The bottom panel gives the plots of seeing variation for the night, based on 3 stars monitored along with the blazar on the same CCD frame.

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thumbnail Fig. 2

The intranight optical DLCs of the HPCDQ monitored in the present study. For each night, the source name, the telescope used, the date, and the duration of monitoring are given at the top. The upper 3 panels show the DLCs of the HPCDQ relative to 3 comparison stars while the attached lower 3 panels show the star-star DLCs, where the solid horizontal lines mark the mean for each star-star DLC. The bottom panel gives the plots of seeing variation for the night, based on 3 stars monitored along with the blazar on the same CCD frame.

Open with DEXTER

thumbnail Fig. 3

Long-term optical variability (LTOV) DLCs for the LPCDQs monitored in the present study; source name and the total time span covered are at the top of each panel.

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thumbnail Fig. 4

As in Fig. 3 for the HPCDQs monitored in the present study.

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thumbnail Fig. 6

Distributions of z, MB, αr, fc, Pext and Pop for our two sets of CDQs: LPCDQs (upper panels; vertical stripes); HPCDQs (lower panels; horizontal stripes) (Sect. 5; Table 1).

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thumbnail Fig. 7

Distribution of INOV amplitude (ψ), for LPCDQs (upper panel; vertical stripes) and HPCDQs (lower panel; horizontal stripes), estimated from the DLCs drawn using the two comparison stars, CS1 and CS2.

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© ESO, 2012

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